Name of two towns in Commagene.
 On the Euphrates
On the Euphrates, modern Gerger, fortified town, founded by Arsames at the beginning of the 2nd cent. BC, and extended by Antiochus I (c. 69-34 BC) as a hierothesion (tomb sanctuary) for his grandfather Samos II and his earlier ancestors. Preserved are a monumental rock relief of Samos II, and important sections of the cultic inscription on the ascent to the castle, which transmits the town's name.
 On the Nymphaeus